(19)
(11) EP 0 438 013 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.09.1992 Bulletin 1992/36

(43) Date of publication A2:
24.07.1991 Bulletin 1991/30

(21) Application number: 90480192.5

(22) Date of filing: 27.11.1990
(51) International Patent Classification (IPC)5: H05K 7/14
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 19.01.1990 US 467595

(71) Applicant: International Business Machines Corporation
Armonk, N.Y. 10504 (US)

(72) Inventors:
  • Casanova, Wayne Joseph
    Rochester, Minnesota 55901 (US)
  • Corfits, William Dale
    Rochester, Minnesota 55901 (US)
  • Dimmick, Roger Francis
    Rochester, Minnesota 55904 (US)
  • Thompson, Gary Allen
    Pine Island, Minnesota 55963 (US)
  • Thorpe, James Robert
    Stewartville, Minnesota 55976 (US)
  • Wheeler, Stephen Edward
    Rochester, Minnesota 55901 (US)

(74) Representative: Colas, Alain 
Compagnie IBM France Département de Propriété Intellectuelle
06610 La Gaude
06610 La Gaude (FR)


(56) References cited: : 
   
       


    (54) Double-sided logic cage


    (57) A double-sided central electronics complex (CEC) (20) is provided for increasing the logic card density in a logic cage or CEC. Specifically, two logic cages or sub-enclosures (22, 24) are integrated, sharing one backplane card so that logic elements may be plugged into the CEC from both sides. The CEC is formed by unitary sheet metal side plates, top and bottom cast or guides (26, 28) and a single double-sided backplane assembly (38).






    Search report